I ended up on PC's because after years of mac's back in the 90's (last was a power pc 6225)I found I would see the Apple bomb MORE often than the blue screen on the PC my company provided - and I had more software options for the PC.
Yes, Microsoft copied Apple, instead of "Apple, option, escape" 3 fingered salute, Mr gates gave us "Control, Alt, Delete" to accomplish the same thing.
Unfortunately, the first PC I purchased had Windows ME. I took that computer back to Costco and they gave me another, it was better, but still bad. I upgraded it to XP, that made all the difference. That thing still runs pretty good - only had a bad ram module that took it down. kids still surf on it. Bottom line is that is was half the price of a same vintage MAC and it is still going strong 7 years later.
I bet, you kid goes to all sorts of web sites playing games. You need to have anti-virus, you have to scan for adware. Game sites are prime places to infect your computer. KIDS don't give a crap about maintaining their puter. In fact, a dead computer can be blessing as they can't spend so much time playing online.
KEY difference between Mac's & PC's is that one vendor makes the hardware and another makes the software. Hardware vendors load the machines up with a bunch of crap that they want you to buy or get a kickback from software vendors. Every PC has a different configuration of software and hardware (internal and external). Fankly it's amazing they work as well as they do. You can go down to the store and buy everything to build your own PC - can you do that with a MAC?
I suspect that if you could buy a PC from Microsoft with only Microsoft software on it it would be every bit as reliable as a Mac. However, if you could do that, man would there be a massive anti-trust suit. Mr. Jobs had to know way back when that if he licensed his software, a bunch of people would have screwed up his baby and he would have a hard time keeping it reliable.
The new mac's look intriguing, but I'm not in the market for a new computer. At least Apple got past all those crummy colored IMAC's.
I hope you get his PC fixed, they are not really evil boxes, just different
Once you get it fixed:
get
Adaware
http://www.lavasoftusa.com/software/adaware
Crap cleaner
http://www.ccleaner.com/
Mark