PC fails to start even after any overclocking attempt (Help).
PC fails to start even after any overclocking attempt (Help).
Hello,
I’m facing a strange problem where my PC won’t boot properly and keeps shutting off repeatedly whenever I try to overclock. The issue began after I applied an overclock on my CPU (Intel i5 6500) for about a month. Now it either stays off or restarts every time I adjust the settings. Despite everything I’ve done—clearing CMOS, changing configurations, and reapplying thermal paste—I still can’t get it to work. I understand the i5 6500 isn’t designed for overclocking, but during testing I pushed it to 4.0GHz and stress-tested it with Prime95 for three hours; the temperatures stayed below 70°C. If anyone has advice, it would be really helpful!
PC details
CPU: Intel i5 6500
Cooler: Cooler Master Hyper 212 evo
GPU: MSI gtx 1060 gaming x 6GB (overclocked)
RAM: 8GB Hyperx Fury DDR4
MOBO: MSI z170 A Pro SLI
PSU: Evga 500B
The only available OC option for the 6500 came through BCLK... to reach 4.0GHz you'd need to run 36x 111? That's quite impressive, and I was surprised it actually worked... BCLK isn't CPU-exclusive—it affects everything from your memory to your PCIe slots...
Regarding the current problem... have you updated the BIOS? Have you recently applied the bigger Widnows updates? There have been some unusual bugs between the OS and BIOS, especially with older versions...
I might also consider the power supply—its 500B isn't doing well.
BUT, the 6500 has a 65W TDP and even when overclocked, a 1060 can't be pushed much further.
The only OC option for a 6500 came through BCLK... so achieving 4.0GHz would require running 36x 111? That’s quite a lot, and I’m surprised it ever functioned... BCLK isn’t CPU-only. It affects everything from your memory to your PCIe slots... As for the current problem... have you updated the BIOS? Have you recently applied the larger Widnows updates? There have been some unusual bugs between OS and BIOS, especially with older revisions... I’d suspect the PSU too—the 500B isn’t doing well. BUT, the 6500 is a 65W TDP chip... and even overclocked, a 1060 can’t be pushed much further. I can’t update the BIOS because newer versions removed non-K overclocking, which Intel wanted people to buy the Intel i5 6600K for. My successful overclock settings were 130 with BCLK, 1.35 with CPU voltage, and 2400 with memory—stable, but puzzling why it suddenly started acting up. With my motherboard, there are troubleshooting lights, and when I try to boot it, the DRAM light appears after applying an overclock to the CPU instead of the RAM at all. That’s strange because it worked before, then it began failing to boot.
Using BLCK causes the RAM to be overclocked as well. It might mean the RAM is beginning to fail due to the strain; try running Memtest during the night to check if performance improves.
CaptainCretin explains that BLCK may be causing the RAM to overclock, potentially leading to failure. He warns that even one faulty component can cause premature wear, making stock speeds risky. He notes he's currently running at stock speeds and everything is functioning normally. When performing memtest, he asks what specific results to look for to identify the issue.
CaptainCretin reviewed the memtest outcomes—they clearly indicate failure; anything that doesn’t pass is concerning. I’ll attempt it this evening to check, though I suspect it’s not the RAM issue but still worth trying.
memtest showed no issues, but I still require assistance, thank you.