I've been having the strangest issue with my new computer and can't for the life of me find an answer. This problem occurs whenever I boot my computer after having it turned off for 15 minutes or so. Shutting down and starting the system back up right away gives me no issues.
The system will start up, but monitor stays dark and no keyboard lights show up. After 5 seconds or so, it will turn off, back on, and I'll get an overclock failed prompt. I then press Delete, save and exit (it remembers my settings), and the computer works fine.
I have nothing overclocked. The only non-default setting is raising the memory voltage to 1.65, which is spec for the memory (OCZ 1333). Changing Uncore/Memory multipliers (for 1066 vs 1333) has no effect on the issue.
BIOS reports CMOS battery as giving 3.12 volts, so that doesn't appear to be the issue. I've also tried updating BIOS, but that didn't fix it either.
Some posts I found pointed to an inadequate power supply, but at the same time 630W (50A on 12v rails) should be plenty for i7 and a single 4870.
I also can't use sleep mode. Resuming from sleep quickly works fine, but if I wait the 15 minutes or so the system fails to start.
Once I do get the system running, it's 100% stable. memtest86+ found no errors, and Prime95 ran for 12 hours without error.
PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182185
Mobo:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813186170
Memory:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227370
i7 920
Radeon HD 4870
Any ideas on what could be causing this or how to fix it?
The system will start up, but monitor stays dark and no keyboard lights show up. After 5 seconds or so, it will turn off, back on, and I'll get an overclock failed prompt. I then press Delete, save and exit (it remembers my settings), and the computer works fine.
I have nothing overclocked. The only non-default setting is raising the memory voltage to 1.65, which is spec for the memory (OCZ 1333). Changing Uncore/Memory multipliers (for 1066 vs 1333) has no effect on the issue.
BIOS reports CMOS battery as giving 3.12 volts, so that doesn't appear to be the issue. I've also tried updating BIOS, but that didn't fix it either.
Some posts I found pointed to an inadequate power supply, but at the same time 630W (50A on 12v rails) should be plenty for i7 and a single 4870.
I also can't use sleep mode. Resuming from sleep quickly works fine, but if I wait the 15 minutes or so the system fails to start.
Once I do get the system running, it's 100% stable. memtest86+ found no errors, and Prime95 ran for 12 hours without error.
PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182185
Mobo:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813186170
Memory:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227370
i7 920
Radeon HD 4870
Any ideas on what could be causing this or how to fix it?