HiGuys,

I have a

Dell Studio 17 Laptop
Intel Core i7 720QM 1.6GHz (2.8 GHz Turbo Mode, 6MB Cache)
4GB, DDR3, 1066MHz, 2 DIMM
ATI MOBILITY RADEON HD 4650 1GB
500G 7200RPM SATA Hard Drive
Genuine Windows 7 Home Premium, 64bit, English

When I start my PC in regular mode all I get is the blue 'not reposnding' cirlce (please see screenshot) and I can do nothing at all. All I can do is access task manager to turn off the PC. If I try and click on anything in task manager, the blue circle appears.

I have ran diagnostics and all passed. I have done a system restore and that didn't work and I ran a system repair at start up, but that made no difference. I have tried to download system diagnostics from Dell, but it downloads but won't run when I click to install, it just says dell installer is not responding.

I have ran the anti virus and various malware checks etc.

Safe mode works most of the time, but even that has frozen a few times.

any ideas anyone?

warm regards K