Screen distorted after sleeping or start up

When I wake my computer up from sleep the screen used to, at times, be distorted in that the words would be widened. I would put it back to sleep and usually it would fix itself but not always. Sometimes I would have to restart it or completely shut it down but as of today I can't get the distortion to go away. It started doing this within the first year I bought my laptop; I've had it about 27 mo. now. Could someone tell me what I need to do to fix this annoying problem?

Hello,
1. as advised above make sure you have latest bios installed with your unit (F.29 for 1/2015)
2. check your VGA driver and if you have newer than in hp.com go back to HP driver (sp56458)
3. your unit use VGA chip in AMD cpu and shared memory. Try to move your 4gb memory module to second memory slot and test
If none above will help you can backup your personal data and do factory reset = recover your SW image to factory SW installation (F11 when system starts)
If none above then you have hardware issue and your unit need HW troubleshooting. There might be memory, CPU or mainboard issues. Please contact HP service for more help.
I am an HP employee.

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Screen distorted after sleeping or start up

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