My PC was working normally until I left it running for about three days. I had been using an unofficial tool to automate a Roblox game overnight. By the fourth day, Windows had become extremely slow and unstable. Boots can lag, the screen sometimes freezes completely, inputs are delayed, games may launch with terrible FPS before working normally after a restart, the system occasionally shows no display, and it sometimes reboots on its own. The computer has an RTX 5070 OC, Intel i3-13100F, 32GB DDR4-3200 memory, a Gigabyte B660M DS3H AX DDR4 motherboard, and Windows 11. I have already tried CHKDSK, SFC, reinstalling the NVIDIA driver, changing XMP and PCIe-related BIOS settings, reseating the GPU and RAM, replacing thermal paste, and clearing CMOS. I have also run antivirus checks, but the problem remains. Could the unofficial tool have infected the system, or should I be looking at a hardware problem?
3 Answers
The unofficial executor is the biggest warning sign here. A scan saying it is safe does not prove that it is trustworthy, especially if it came from an unofficial source. Treat the system as potentially compromised: disconnect it from the internet, run Microsoft Defender Offline Scan or another trusted bootable scanner, and avoid logging into accounts from that PC until it is clean. Change important passwords from a different, known-clean device and enable two-factor authentication where possible.
A clean install is also useful for separating malware from hardware failure. Before reinstalling, check temperatures and memory stability, test the RAM one module at a time, inspect SSD health, and try a different known-good power supply if available. Random reboots and intermittent no-display issues can be caused by unstable power or a failing component, not just software.
Given the freezing, delayed input, random restarts, and display problems, I would not spend much more time trying individual Windows repairs. Back up only personal documents—not programs or suspicious files—and perform a true clean Windows installation by deleting the existing system partitions during setup. Then install Windows and drivers from official sources only. If the symptoms continue on a clean installation, start testing hardware, especially the power supply, SSD, RAM, and GPU.
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