Laptop Hangs on welcome Screen

[ukapolog]

My new Sony Vaio laptop (just 3 weeks old) hangs on 'welcome screen.' I mean it really 'hangs' and does not want to come off it.

Solutions?

[Blencogo]

Hi ukapolog and welcome.

Which Vaio model do you have?

Has this just started?  Have you installed any updates recently?

What anti-virus software do you have installed?

[ukapolog]

Hi There.

I have Vaio SVE1511A1EB.

No, I have installed no recent updates. It first hung on 'welcome' five days ago, bur only for 3 minutes. Today it hung continually. Only disconnecting the batteries solved the problem.

I have Avast antivirus. Did a scan much earlier today - no problems found.

[ukapolog]

I would say that it hangs (always on welcome) about once in every 30 switch-ons.  But today was major. I had to deprive the computer of all power sources to solve it. Then it behaved perfectly - as it is now.