Cause of Boot Loop
Cause of Boot Loop
Hello everyone. I need help diagnosing a boot loop issue I had just a couple minutes ago. I've already fixed this by clearing the CMOS. I'm just trying to find the cause of my boot loop. What happened is that I got home from work and when I went to turn on my computer it wouldn't post. The power would turn on, the fans would spin, then it'd restart. It wouldn't get to the bios screen or anything, it would restart before that. My computer worked fine just 6 hours earlier. I plugged in a speaker to the header and it wouldn't even beep and the LED code didn't display an actual code. It just displayed an 8. (or B) My question, is it my CPU overclock? I have it at 4.6ghz @1.40v. The temps are fine, and it runs p95 stress tests with no issues. The only reason I'm not sure if this is the cause is because I've had this overclock for a good couple months and I haven't done anything particular cpu intensive since I don't have my gpu yet. Could it also possibly be due to my RAM overclock? I upped it to 2400mhz on stock voltage. Like I said before, I did fix it already, but I just want to learn what was the cause of it so that it can be prevented from happening again.
Specs
i5 6600k
Gigabyte Z170x Gaming 5
No GPU yet (waiting on 1080)
cooler master v650 80+ gold
Geil Super luce 2x8 ram kit
Mushkin 256 Reactor SSD
WD Blue 320gb HDD
Cooling loop
xspc raystorm cpu block
360mm Swiftech xtreme performance rad
phanteks f120mp
phobya dc12 pump.
was the pc on or in sleep mode when you left? there could have been a power surge or brownout. attempt to clear the cmos first and check if any changes occur. if nothing happens, remove the power supply and verify whether the green wire connected to the black wire on the 24-pin ATX port causes the fan to spin and remain active. if the fan spins up and down, there may be a faulty power supply. if it stays off, test with a volt meter and ensure all outputs are normal. try using a different ram stick to see if the boot behavior changes. if the system loops during boot, it might indicate a shorted component or power issue.
Was der PC beim Verlassen eingeschlafen oder im Schlaf? Es könnte ein Stromstoß oder eine Unterspannung gewesen sein. Versuche zuerst, die CMOS zu löschen und beobachte, ob sich etwas ändert. Falls nicht, entferne den Stromversorger und prüfe, ob der grüne Kabel an die schwarze Verbindung am 24-Pin am ATX das Lüfterwerkzeug antreibt und hält. Wenn der Lüfter auf- und abschaltet, könnte es ein defekter Stromversorger sein. Wenn er stabil läuft und alle Ausgänge normal sind, versuche einen anderen RAM-Stick. Beobachte, ob der Startprozess anhält. Wenn er sich wiederholt, könnte es sich um einen Kurzschluss oder eine schlechte Stromversorgung handeln.
Yes, it seems like the overclock, especially the RAM, might be the issue. You could revert to the original settings to verify, but the symptoms seem consistent. I owned an FX 6300 that ran smoothly in prime95 with all games at 4.8, yet sometimes it would take multiple attempts to boot. Overclocking can make stability unpredictable, but hearing the "beep" or seeing the POST screen after a loop is really satisfying.
I didn't mean to disrupt this discussion, but I wanted to share the solution in case others face similar problems. (By the way, I only found out about it recently) It wasn't the RAM issue, and I suspect the CPU wasn't the problem either. I disabled the RAM overclock, adjusted the CPU overclock slightly, and increased its voltage a bit—this should have fixed things. Still, the boot loop persisted. I believe the cause was software-related, as it hasn't occurred since the full Windows update or after my RAID failed and I had to reinstall drivers.