driver irql not_less_or_equal

nashathedog · 14 Aug 2015 at 13:36

Hi, It took me 5 attempts to get past this blue screen issue when trying to start my PC up today.

Has anyone had similar a similar experience with Win 10?

driver irql not_less_or_equal (iaStor Asys)

nashathedog · 14 Aug 2015 at 18:30

It's constantly crashing and giving a "irql not_less_or_equal" message now.

Anyone having issue, I'm on Win 10 pro, everything's been great until today

Zinnkio · 14 Aug 2015 at 20:15

I've been having the same. People have suggested to me to run MemTest by putting it on a USB. Try a different sata port too.

smogsy · 14 Aug 2015 at 21:49

easy fix

go to device manager in admin mode
> go view - resource by type
> find device in question thats causing it (eg istor would be usb? from memory)
> go to resources edit irq number so they do not conflict with other devices

sityeuropa · 15 Aug 2015 at 19:29

I had this. OP to fix this, go into your BIOS switch SATA modes from AHCI to IDE. You may have two places where you need to set this.

Windows should now boot.

Click Start > type msconfig > Boot tab > Tick Safe Mode.

Go back into your BIOS, set SATA modes back to AHCI.
Start Windows in Safe Mode which should now boot.

Click Start > type msconfig > Boot tab > Un-tick Safe Mode.
Reboot and enjoy.