I turned on my PC for the first time in several weeks after returning from a trip. The cursor shows a spinning indicator, almost nothing loads, and I can barely click anything. I used it briefly when I first got home and it was already acting a little strange, but after leaving it on for about two hours, the problem persisted. I also disabled my VPN and its kill switch, but the computer is still unresponsive. Does this sound like a virus, or could something else be causing it?
3 Answers
Give it several minutes after a normal boot before forcing it off, since updates and background tasks can make the system seem frozen. Restarting after only a minute may interrupt that work. If it remains unusable, try booting into Windows Safe Mode. If the problem disappears there, a startup application, driver, VPN component, or security program is likely involved. Once you can use the system, run a full security scan and install pending updates.
Because it was already acting strangely before this boot, I would also treat possible hardware trouble seriously. Repeated freezing, a disk stuck at 100%, clicking noises, or very long loading times can point to a failing storage drive rather than malware. If you manage to access your files, back up anything important before running repairs or continuing to use the computer heavily.
This does not automatically mean you have a virus. Windows may be catching up on updates, indexing files, or launching several startup programs after being offline for a while. If you can open Task Manager with Ctrl+Shift+Esc, check whether the CPU, memory, or disk is stuck near 100%. The process using the most resources can point to the cause. A nearly maxed-out disk, especially on an older drive, could also indicate a failing drive.

I only let it start for a short time before restarting, so I’ll give it a proper boot and check Task Manager if I can get it open. I’ll also back up important files if the system becomes responsive.