I have an Emachines T2642, that has stopped working. Searching for help, I came accross incidents of the same type, and results that the motherboard wasn't working, so I came to the same conclusion. I assume either my motherboard or the PSU doesn't work. I was considering purchasing a motherboard from http://www.newegg.com/Product/Product.aspx?Item=N82E16813138262 Since I read these are compatible, but a friend of mine told me that since I have a DDR 333 RAM, i'd have to find a motherboard with the same memory standard if I want to keep using the RAM I already have. Any help or suggestions on this? Also, I have Windows XP Home SP2 installed on the HDD, but I only have Win Prof CD. I read on the microsoft website that if u r replacing a mobo, you can just repair Windows instead of reinstalling, would I still need a Home CD, or would Prof work as well? I emailed them but haven't gotten a response yet. What would be a good PSU to get, as i've read here that I migt as well get a new one just in case, and replace the already old one. The current one I have is abt 250V. I've had my PC for about 3 years. I'm only looking to spend around $100 - $200. Can't afford anything more as of now. Thanks in advance.