You may have something incorrectly lodged into your motherboard or something may have come slightly loose when you transfered cases, you could check everything is in place or take the whole thing apart and put it back together again.

What other ggames get played on your PC? Any?

Motherboard make/model and display card make/model would be handy things to know for a question such as this one.

i play warcraft 3 frozen throne diablo 2 expansion ut2004
my graphics card is a nvidia geforce fx 5200
my mother board is a lan party one....

thx for the help

I'd be suggesting you check to see if a stray screw has been lodged under the motherboard as well.

You should also check if all cards etc are firmly lodged in their slots, all connectors firmly pressed home etc etc..

What did you mean about reinstalling AA? It never fixed it? You couldn't reinstall it? It's rather strange that this relates to just a single game.

i reinstalled the game to try that out and i got it reinstalled and it still shuts down... it IS really weird but it only shuts down when i play AA.. i dont have any clue why...

ok sorry for the misunderstanding but i never actually played UT2004 w/ my new case and now that i have it made my computer shut down when i played it.. so now its only happening w/ games that have higher graphics.. im guessing... IDK :cry:

Random shutdowns and restarts usually result from only a few causes.

- Overheating. Did you assemble the system or was it prebuilt? If your system is overheating I'd guess it's the processor, as your display card is a rather low powered one. Check that the display card is firmly seated in its slot anyway, and carefully check if the processor heatsink is firmly clipped on. There should be little to no sideways 'twist' possible.

- Virus infection. Have you got up to date and updated Virus protection running on your system? A firewall?

- Memory mismatch. Try removing the 256Mb module and then giving your system a good hard workout to see if it becomes more stable. (Switch off at the wall outlet before fiddling with the internals of course) Use one module at a time only, and have it in memory slot 1. Try the othe module(s) in turn. 'Mix and match' with unbranded or different brans of RAM module can lead to memory conflicts and errors.

- Misconfigured BIOS. What is the exact model number of your motherboard please? Saying it's a 'LAN Party' one doesn't help much, because that's a product line, not a specific motherboard. It's like saying "my car is a Ford sedan".

its a nf2u4000 AGPset, ATX Socket-A w/ FSB400 etc..
Lan Party NFII Ultra B
read that from the box so i hope that works

Some answers to the other questions I posed would help please.