I have an XPS M1710 with factory default parts.

Problem as follows:

At full brightness, screen flickers then turns itself off after a few seconds.

To avoid this, I have been (for the last few months) turning the brightness down a couple of notches. In the event that the screen turns itself off, I have found that putting the laptop on standby then turning it back on does the trick. Screen flickering has been common, even with the brightness a couple of notches down, but putting it another notch down has sometimes made it stop.

The last couple of days it's been particularly bad. The screen flickers annoyingly at any brightness - plugging/unplugging the laptop sometimes delays the issue but not for long.

When I connect the laptop to an external display, it works fine, but I am unable to determine whether it's a power issue, or the screen itself.

The battery test in WIndows itself reports that it's fully operational.

I've actually had screen flickering problems since I bought the laptop, but sadly I didn't act on this within the warranty period as I thought it was a one-off the first time. I assumed it was a driver conflict or something.

So, can anyone help? It would help, before I pay for repair work or replacement parts, to know which part is at fault!