System Health Score

A single 0–100 grade for your PC, with the detailed checks behind it.

What it does

Instead of making you eyeball a dozen metrics, System Health Score runs a battery of checks and distills the results into one number. A green 90+ means you're in great shape. Below 70 means there's likely something worth looking at. Click through the detail list for a plain-English breakdown of what earned or lost each point.

What it checks

The score is calculated from dozens of signals, grouped roughly into these categories:

Storage

Free disk space, SMART drive health (self-reported drive errors), fragmentation, and whether TRIM is enabled on SSDs.

Performance

Number of startup programs, uptime without reboot, memory pressure, and whether you're on the High Performance power plan where appropriate.

Security

Firewall, Defender, UAC, Secure Boot, BitLocker, pending Windows updates, and whether any risky ports are open.

Stability

Recent blue-screen count, driver errors, critical Event Log errors, and unsigned or out-of-date drivers.

Cleanliness

Junk file accumulation, registry issues, bloatware still installed, and temp-folder sizes.

Reading the result

90–100 Excellent. Minor tweaks only.
75–89 Good. A few things to address when you have time.
50–74 Fair. Worth addressing — your PC is probably feeling sluggish.
0–49 Poor. Several important issues need attention.

Below the big score is a list of every check, the points it contributed, and a short note. Click any item to see which TuneBit tool can fix it.

How to use it

Go to Diagnose → Health. The score calculates automatically.
Skim the detail list from the top. The first items are the ones costing you the most points.
Use the linked tool (for example, the Junk Cleaner link if your score is dragged down by 20 GB of temp files) to address each one.
Click Refresh to recalculate after making changes. You should see the score climb.
Click Export Report to save a timestamped HTML report you can keep or share with an IT pro.

Don't chase 100. Some checks are intentionally strict — for example, uptime longer than two weeks costs points even if your PC is running well. The goal is to be in the green, not perfect.