The mainboard may RECOMMEND a minimum of 200 Watts, however, the manufacturs of the mainboard do not know what kind of additional components you will install.i have just bought a 400w power supply just going to install now and will let you know [glb][/glb]i have just fitted a new 400w power supply and the computer now works ok without it restarting thanks for all your help cheers are all you games causing this problem?no only certain one mainly mafia and driver 3.Are you up todate with the lastest directx.......you could type dxdiag the run and see what it reports.....
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you could use the website to see about power issues>http://www.jscustompcs.com/power_supply/

------------------------------------------------------------------------If it was an old game i was going to suggest this>
http://www.cpukiller.com/
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i WOULD go to the game makers site .....your pc system may need a patch.......is might be a game code faulti am RUNNING direct X 9 . I will have a look on theses sites now.  the programs i was having trouble with where recent titles, and as far as i know i have the latest direct x driverHas your problem not been resolved by installing a new Power Supply Unit?

Merlin should heed previous posts..thank you for your help in resolving this problemMerlin should heed previous posts;;;;;;quoted by Raptor:


Ok boss:)......COMMENT.....notedany help is better than  none at all