MT4 platform won't load

Hi, I seem to be having trouble loading and launching my mt4 platform. I know it's my computer because it will load on my stepsons computer. I have tried three different reputable brokers. FXCM, Oanda, and Forex. I get the initial user agreement and start up. It then pulls up the MQL5 community website and asks me to log in. I minimize that and launch mt4. It flashes briefly as a white screen with metatrader in the blue bar. Then disappears, Then nothing. I tried uninstalling and reinstalling and logging on to mql5 and trying.Nothing on all three brokers.

I have the same issue with build 840. I have tried uninstalling, reinstalling, downloading from different brokers, Metaquotes itself, all to no avail. The terminal crashes every time!

Fortunately I am only using a demo account!

For the time being I am getting by with a build 600 that I had backed up, but the functionality is limited.

If I get a response from the service desk I will update here...

Update:

Glad to say that the service desk has got me up and running again. I now have build: 858 running and it seems to be stable. Hasn't crashed yet!

I am still experiencing issues with the Metaeditor at the moment - it crashes when I try to access the help file. So, if that is resolved I'll update this thread.

If you are still experiencing stability issues, I would suggest contacting the service desk.

OD

This should help everyone alot I hope! Right Click your Mt4 platform you are trying to open... click on go to file location, in this you should see metaeditor.exe, click on it.. click on mql4 then cllick on Logs, then click on log file with the most recent date.. Take a look at your log file by scrolling down..
You should see a file that you deleted or something that keeps giving you error that needs to be fixed... Thank Me IF It Helps!

Yes that helps a lot, it identified an expert indicator that's causing problems. Thanks for the good advice.