About a month ago we recently had some unexplained power outages (5 in all) over a period of 3 days. ince the LAST outage my sstem will just power off for no reason usually while on the internet or using an application. Games don't seem to be a problem. Here are my system SPECS:

AMD 5600+ X2 Dual Core processor
ECS 6100 SM-M motherboard with NVidia Graphics built in
Windows XP
2 GB MemoryPower supply could be stressed from surges...have you swapped power supplies yet?

Does it show a shutdown PROCESS or just black screen and off?What BRAND and wattage is your PSU ? ?
You may also want to replace the surge suppresser as they are usually good for only a few hits.Dave you're speedin up in your old age....beat me to it !The PSU is an Antec 500WHow old ? ?The computer itself has been upgraded last year from a P4 2.8Ghz with 1 GB memory and I had that one for 2 yrs. So about 3 years old. By chance is there a PCI modem card in this machine ? ?
If so remove it and try it without.
Have you tried a new power strip and or moved the machine over to another outlet ?I believe it is a board issue since the computer works great when playing games just not so when it is working in Windows or a MS applicationQuote from: computerfrk1 on January 06, 2009, 08:17:53 PM

I believe it is a board issue since the computer works great when playing games just not so when it is working in Windows or a MS application