PC boots to BIOS on soft boot only

[LesC]

Recently I’ve noticed some odd behaviour in the way my PC boots up – On soft boot ie if I switch it off and then switch it back on again (without switching on at the mains) it boots directly into BIOS. However, all seems fine from a cold boot i.e. switch on at mains & then switch on PC it boots up fine. It boots up fine on 'Restart' too.

This was since I had the watercooler replaced under warranty by Scan who updated the BIOS from V1.0.1 to V2.03 at the time too.

I've tried removing keyboard, mouse & other usb devices in turn to rule them out but no joy. Any ideas what could cause this?

[Millennium]

Are there other BIOS you might use?

[MaddAussie]

Check all the motherboard power cables are seated and as Millennium said, see if its a BIOS Issue

[LesC]

Excuse my ignorance, but how would I check to see if it's a BIOS issue?

[LesC]

Think I've sussed it - enabling S3 and S4 compatibility seems to have done the trick. I cna only assune I'd inadvertantly disabled it