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Found out that Ez debug led CPU lights up on the motherboard right when screen goes black before I have to manually restart. Did I fry the cpu or motherboard while flashing bios?

I did that, downgraded to version I used previously, problems continued

I decided to update the bios today, downloaded the latest available version from the MSI website, flashed successfully but windows wouldnt boot. I (kinda) sorted that, managed to boot into windows but pc started rebooting/giving black screens where cpu fan stops spinning while psu, gpu, case fans spin until I press the restart button manually. So I then downgraded the bios to the one I used before, but the problems continued. Basically windows bootup is longer but it boots, but then reboots/freezes randomly, sometimes after 10 seconds sometimes after 30 minutes. After 3 or so reboots/crashes windows recovery boots up with the BCD error code 0xc0000098 which is probably caused by me trying to fix it not booting in the first place after the bios flash. Pressing "F1 to enter recovery enviroment" causes the pc to crash/bootloop/black screen again. Managed to download windows iso to try fixing BCD but it crashed while i was making the bootable usb drive with rufus, so no repair available at the moment. Tried switching the gpu to another one Tried taking out ram sticks, different slots Tried disconnecting all drives except ssd Cleared cmos multiple times Tried safe mode, still crashing Pc was running stable for a year before this without any hiccups until that bios flash. Build in question: Ryzen 5 2600 Msi b450m mortar 16gb gskill aegis 3000mhz Rx580 Bitfenix formula 450w

Thanks for the detailed response. I narrowed it down to Formula Gold 450w and Pure Power 11 500w, basically the same price but Pure Power 11 has a 3yr warranty vs 5yr on Formula. Should I go for longer warranty or more wattage for future upgradeability? I plan on running r5 2600 on 4.0/4.1ghz if possible, probably gonna oc the 1060 aswell, tho I mostly play cpu intensive games. Probably upgrading to 1070ti/2060 once/if needed.

Would this be considered a good buy compared to CX or Pure Power 10/11? Bitfenix Formula Gold 450w - 65€

Both Pure Power 10 and 11 400w are around 56€. But 400w sounds like its cutting it too close. Some of those PSU calculators are suggesting around 380w load wattage

I'm building a ryzen 5 2600, gtx 1060 system, plan on overclocking a bit. Turns out picking out a psu is a complicated issue. Not sure if I should go 450 or 550w. I'm in Europe and I picked out a couple units that are available to me and are considered good or not so good: Fsp hexa 85+ 550w - 57€ Seasonic s12 520w - 60€ Coolermaster masterwatt 550w - 70€ Corsair cx550 / cx550m - 70€ / 73€ Be quiet pure-power 10 500w cm - 76€ Cougar gaming gxf 550w - 76€ Bitfenix formula 550w - 80€ Coolermaster masterwatt 450w - 58€ Corsair cx450 / cx450m - 60€ / 66€ Super flower platinum king 450w - 73€ Seasonic focus gold 450w - 80€ What would be considered best value for the money?