Posts Tagged ‘Technology’

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eMachine Computer Repair Job

January 27th, 2009

A few weeks ago I picked up a quick freelance job from one of the cab drivers who drives me home often.  He had a computer he wanted me to take a look at and attempt to upgrade for him.  He doesn’t want to spend more than $200, and he just wants basic things done to it, nothing major to me. He drops off the machine and to my surprise it’s an old HP Pavilion mini-tower.  I take it in and stare and it and realize that this is not really worth it; it holds a maximum of 512MB of PC100 RAM, it has a 20GB hard disk, and it’s only got a Pentium Celeron 667 in it.  I let him know this thing is basically worthless and he informs me that a friend of his has given him a newer eMachines computer.  I tell him I’ll take a look at it.

The machine is an eMachines T3092 with an Athlon XP 3000+ processor, 512MB DDR RAM, 160GB hard disk, CD-ROM and DVD-R.  It’s got onboard nVidia gforce 4 video and sound, and it actually works fairly well.  He wants the maximum amount of RAM (2gb) and a fresh install of XP, nothing really major.

Step 1: Order RAM

Easiest part, right?  I order 2GB PC2700 RAM from New Egg for $54 and have it shipped to me at work.  It ships from Edison, NJ…about 30 mins away.  It takes 5 days to reach me. This is annoying to me because I could have used 2 of those days (the weekend) to install and test the RAM.  Why would this have been important to me?  See below…

Step 2: Install RAM

I install both 1GB sticks, computer boots, I rejoice.  While working a bit I notice some issues.  Freezing, slow loading, and finally blue screens.  This is not good.  I’m thinking it’s a driver issue because of the new RAM.  I reinstall the chip-set drivers and still blue screens.  Finally I run Memtest on the RAM, right away both sticks come up with errors.

Step 3: Test RAM

I pop out 1 stick and test only one.  Same deal, red flags like China.  I pop that stick out and test a stick that I know to be 100% working, one from a computer that is used all the time.  Memtest: CHINA!  What next?

Step 4: Begin Google and BIOS

Looking through the BIOS for memory settings; speed, voltage, etc.  Nothing to change that would help.  Google brings some light on this; many people have the same issue, works with 512MB but nothing more.  Some people say it’s the power supply unit (PSU), some had RAM issues.  Since I know it’s not the RAM, it might be the PSU. That’s my next stop, testing a better PSU than the Bestec that’s in there. Many people on forums complain that the PSUs in eMachines are crap, and they tend to burn out boards, RAM, or just don’t give enough voltage. Hopefully it’s the PSU.

If after I test the PSU tonight it does the same thing it’s time to get a new motherboard for this guy.  Now, keep in mind he wants me to try to stay below or as close to $200 as possible, at this point I’ve been VERY generous with costs only charging him 50% of my normal labor costs. If he needs a new motherboard I need to eBay it because no one has them in stock.  The price on eBay with shipping is approximately $60, the same price as the RAM.  I told him I can either get a new motherboard or he can stick with the 512MB RAM for now.  Only issue with the latter, he has to pay for th 2GB RAM still, it’s not returnable, and I only bought the brand I bought because it was well rated, has a lifetime warranty, and was cheaper than the other more known brands.  He wanted me to save him money, so I did.  Now it might bite him in the wallet.

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Posted in Hardware, Software, Technology

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Upgrading the Hard Drive in a MacBook Pro (Late 2006 – Core 2 Duo)

November 25th, 2008

Thursday night my roommate and I decided to buy new hard drives for our Mac’s. I was running very low on my 100GB drive, and he wanted something better than his 160GB 5400RPM drive. I was looking into upgrading for a few weeks by now and was very tempted to buy this 320 GB Western Digital Scorpio that runs at 7200RPM. This is the same one that my boss, Carl, purchased for his MBP. The major difference is that he bought it from iFixit.com for $199.

I use one of the best programs for a Mac to backup your hard drive simply and cleanly, Carbon Copy Cloner, and best of all, it’s 100% free. The backup takes roughly 2 hours using an external drive interface via USB, and I begin the dissection.

I’ve installed and replaced several parts in Powerbooks before but not a MBP. It’s relatively the same,, with the exception of a few screws and innards. I like using the How-To’s on iFixit.com, they have everything from drive replacement to replacing the screen for Mac laptops old and new. I use the one suitable for my laptop of course, and in the end takes about 45 minutes or so to replace.

Almost 3 hours to backup and install a new 320GB hard drive into my laptop, not too shabby I think. Of course my roommate was done in about 2 hours because it is a lot easier to get to the hard drive on the new MacBooks, but that’s how it works.

The Good:

  • Very easy to backup drive, CCC is very quick and safe
  • No BIOS settings, plug the drive in, you’re done
  • Fairly easy to get to drive once case is opened

The Bad:

  • Too many screws to open MBP
  • Apple uses some TORX screws to secure case and drive

The Verdict:

  • Noticeable increase in speed with new drive (16mb cache)
  • VERY quiet drive
  • No vibrations (some people online complained about vibrations from the new drive)
  • Well worth the $100
  • Stay away from iFixit for hard drives;-)

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Update on previous Issue

November 11th, 2008

So, very odd things are happening. First, our DNS server is not taking updates for some reason, unless Poly isn’t sending updates for some reason. Either way, on my network, the site does not work, on any other network, it’s fine now. Second, the site that was originally setup was not working of course, but I decided to do some trickery. I wanted to see if the system was actually working properly, or if it was actually the WordPress install. I switched the working virtual host home directory with the Word Press one, and lo-and-behold, it didn’t work. I just uploaded a fresh WordPress install to the proper directory, and it’s now a working site!

Turns out it was NOT Leopard server, but the WordPress configuration. So let this be a lesson, always start fresh if you can. :-)

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Apple Server Admin 10.5

November 11th, 2008

As I wrote before, I use Apple servers at work and most times I enjoy using them. I feel that the operating system is very stable (I happen to use 10.4.1 and 10.5.5) and very customizable, and i also feel that the hardware is very good. It’s very rare that I see the CPUs being pegged or the memory getting drained somehow.

Our secondary server, POW, the server that this site is currently hosted on hosts a few different domains. Recently, I have been setting up things for our new HCI and Games lab here at BXMC. They wanted a site so they made one in WordPress with my recommendation. Now I need to move it to the server with a better domain than pow.idmi.poly.edu/~chrisdimauro/wordpress. I was instructed to use socialgamelab.bxmc.poly.edu (the bxmc is due to the expected change in all of our domains soon). I call up my guy at IS and he tells me it’s done. Excellent for me.

Now the task of setting up another virtual host on POW. Normally this is a CLI job with lots of files and configuration but not with Server Admin (SA); SA gives you a really nice GUI for editing many server features. One can completely configure and maintain their server without ever using CLI by using SA. More complex set-ups will have difficulty at times while only using SA.

This is what you’re presented with after opening SA, a very nice looking summary of your server and it’s running processes.

ServerAdmin_1

Now, I want to add a new website to this server using a name-based virtual host. So I’ll select ‘Web’ from the left side list of active services, and begin to edit this:

Picture 1.png

That’s a very simple, straight-forward form for a website. I filled out all of the appropriate information, pointed everything to the proper directory, and save. I restart apache, and try the site after a few (i needed to wait for it to replicate to the external dns servers). After a short wait, I test the site. I am directed to the main site, pow.idmi.poly.edu. Something is not working on my end, I don’t think virtual hosting is working properly. So I test one of our other virtual hosts on the server, and that works. I compare the two, both are the same 100%. Now it’s time to bring out the CLI and go deeper into the config files.

Apparently Leopard server uses different configuration for virtual hosts and apache in general. It breaks up each virtual host config file into numbered .conf files. Apache’s httpd.conf just includes the directory and any .conf files that are inside of that directory. Sure, this looks nice, it’s pretty clean and easy to edit sites, but it’s a pain when researching help, I am literally stuck with Apple only help (to a good extent). I find the appropriate file (nicely named 0005_[ip]_socialgamelab.bxmc.poly.edu.conf) and look into the file. I compare it with the working virtual hosts .conf file and find, they’re also the same.

Now I begin to ask myself things like “Why?” and “What?” but at the same time begin to wonder how Leopard Server is messing this up. The site loads properly if I direct the browser to it’s long directory, but still only gives me the main site if I use the new virtual host name.

I am still in the process of working on getting this to work. I have a list made up of how I am going to resolve this. I think I will update as I go through the list.

  1. Comb the internet for help, this includes Apple discussion forums, and of course Google.
  2. Change the bxmc to idmi. This could be conflicting on our network which is still using idmi for everything else.
  3. Call Apple Support. When you buy Apple server products, like every other server retailer, you get support. We have support for our recently purchased Mac OS 10.5 Server, I will utilize this to it’s fullest extent.
  4. Replace the entire apache configuration with a default configuration from another system that works. Last resort because I really do not want to re-configure the webserver.

Covering the List

  1. I have been searching the internet and Apple discussion boards for hours (before I wrote this post). I found one issue with domain aliases using an (*) in place of a real alias, but nothing that fixed the problem yet.
  2. IS has changed it to IDMI a little while ago, I’m waiting for it to update. Let’s hope this is the last step.

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Apple 3rd Generation iPod, 2003 ~ 2008

October 20th, 2008

I own an iPod. To be more precise I actually own a 3rd Generation iPod; if you don’t know what kind that is, check it out on Wikipedia. It’s the first iPod to have a dock, the only iPod for have 4 light up buttons, lined on the top, and the iPod with the worst battery life, period. It also uses firewire to charge and sync, no USB charging on this guy.

My iPod is 40GB, and I’ve never filled it. But I love my iPod, I love how it looks, and I used to love how rugged it was. It’s been through a lot, here’s a run down of stuff:

  • 3 batteries, all replaced by me
  • 1 headphone connector
  • dropped on asphalt and stepped on accidentally
  • dropped in a sink full of water (not by me)
  • dropped several times from my pocket to the ground
  • sat on
  • banged about

I bought it in 2003, when it was new, from eBay for $300. It has lasted me 5 long years, and now the battery is dying again (it only holds about an hour charge). I’ve finally given in and decided to buy a new one.

When looking, I decided to get another iPod, just because I like them, and I’m very impressed with my iPods durability. I decided to get a refurb from Apple. It’s the “previous generation”, basically meaning they don’t make it anymore. It’s 80GB, black, and $100 cheaper than the new ones. Of course I got Applecare for the additional $59. Worth it.

I am anxiously waiting for it to arrive from California now. I’m hoping that this new iPod gives me the same amount of life that my 3rd gen has given me. I of course will not be doing away with the 3rd gen, it’ll still be used for files and backups until something else on it dies (the hard drive or the port).

So, in this post I shall thank you 3rd Generation iPod. You’ve given me countless hours of entertainment, you’ve been around through my entire college career, and I know you’ll always be around somewhere for me.

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