ASRock z77 extreme 4 Fails to boot windows and restarts

PlagueFather

Reputable
Oct 6, 2014
2
0
4,510
Hi everyone I've had this PC for over a year now and no problems till this morning. As rock title screen thing will appear as normal, but then it goes to black screen with grey text that usually let's you select eg to restore PC to a working state. However it flashes for less than a second and there is one option listed as just windows 7 I believe its asking to select an os. It then however restarts to the as rock title screen thing before I can do anything.

It won't let me f11 for boot menu.
It will let me f2/del for UEFI setup but constantly flashes discard changes and exit option with No and cross box greyed out and so preventing me from doing anything.
On UEFI setup A6 is lit up (SCSI detect) and when it should be booting A2 is on as normal.
When resetting to as rock title screen it cycles through 10 15 some others 95 99 and F4 I think.
 

PlagueFather

Reputable
Oct 6, 2014
2
0
4,510
Okay so wierdly as I was typing that on my phone I left it on UEFI setup for about 10 mins. Soon as I clicked the flashing discard changes and exit it started booting windows. Albeit a little slower than normal. Does anyone know what caused this? cause I have a strong feeling it will happen again on next start up.