At least, on consumer motherboards. I have a 4ghz Haswell on a Asus z97 mobo. Wanted to reboot it to check on fan profiles. Realized it was not letting me into uefi BIOS and when it would get there my mouse was all locked up. Now I’m in a situation where I need to make sure my workstation actually works correctly. Cold boot doesn’t help. Different BIOS key F2 doesn’t help. Pull power cord and pull bios power jumper. Didn’t help. Finally pulled the two Intel i840 cards.
Bounced into the BIOS straight away and nothing was amiss.
Anyhow, I think the system should run cooler now.