H22A Posted August 28, 2009 Share Posted August 28, 2009 Hi Have just replaced my Tagan BZ700 with a Corsair HX850W. Direct swapout, haven't changed anything else in the system. However since the install when I shutdown the PC, it powers downs... but only for a couple of seconds and then restarts again without me doing anything. To keep it shutdown, I am having to switch the PSU off and then back on. (The power down is very similar to when I make a change in the BIOS to certain settings and then save that change, the machine shuts down briefly and automatically restarts) I have checked the BIOS and all "power on events" (lan, ps2 etc) are set to disabled. The BIOS is the latest revision available for my motherboad (b17 26/05/08). Clambering around under the desk isn't an option evertime I want to shut the PC down... help! :confused: Link to comment Share on other sites More sharing options...
Yellowbeard Posted August 28, 2009 Share Posted August 28, 2009 Have you tried clearing the CMOS and resetting the BIOS? Also, have you tried disconnecting the power and reset switches and manually jumpering the system on, then shutting it down from the OS? Link to comment Share on other sites More sharing options...
H22A Posted August 29, 2009 Author Share Posted August 29, 2009 Yep Yellowbeard. Have tried all that you suggested, the problem is still there tho. If I have both the reset and power on connectors removed from the jumpers and manually jumper the power on, the machine switches on. But if I then do a shutdown, it switches off but them comes back on again after 2 seconds. The only time it doesn't switch on automatically is when I very first turn the PSU on, it sits their and waits for the power on signal. After that nothing I can do will keep the machine in a shutdown state other than swicthing the PSU off. Does this sound like a faulty PSU? Link to comment Share on other sites More sharing options...
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