My computer has become noticeably slower over the past week or two, especially when loading new areas or files. For example, an older game that used to load instantly now sometimes takes 10 seconds to more than a minute when moving to a new area, although revisiting areas that are already loaded is much faster.
I ran a full virus scan and used chkdsk /f /r, which may have helped slightly but did not solve the problem. The drive seems slowest when accessing something new, making me suspect the disk. The computer is about seven or eight years old, and the drive in question is an internal HDD used as the D: drive rather than the Windows system drive. It contains most of my files.
While installing an update, Task Manager showed the drive at 100% active time almost constantly, but read and write speeds were often below 10 MB/s and sometimes only a few KB/s. Is that normal for an older hard drive, or does it suggest that the drive is failing? I would like to diagnose it before spending money on a replacement, but I also want to protect my files if the disk is becoming unreliable.
3 Answers
Some newer installers and applications can saturate an older mechanical drive because they download compressed data and unpack many small files. So 100% usage alone does not prove failure, but the sudden change in performance makes the drive worth checking. Avoid relying on chkdsk as a health test—it can repair filesystem problems, but it cannot reliably predict a failing disk.
A hard drive can show 100% active time while transferring very little data, especially when it is struggling with small reads, retries, or slow random access. That combination, along with unusually long loading times, is suspicious on an old HDD. Back up anything important first, then run the manufacturer’s own extended diagnostic if available.
Check the drive’s SMART health data with a tool such as CrystalDiskInfo or GSmart. Pay particular attention to warnings and values such as reallocated sectors, pending sectors, and uncorrectable sectors. If anything is flagged, back up the important files immediately before doing more testing or repairs.
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