Windows 8 does not appear in choose OS screen (I already have Win7 Ultimate 32bit)?

I downloaded Win8 build 9200 and installed it in dual boot method........ It worked fine for a few days i.e. my laptop used to open up in Win8 and used to ask which OS i need to open ( Win8 or Win7 ).But now my pc automatically boots to Win7 and does not show CHOOSE OS screen. Even if press F2 when Win7 boots up it shows that I have only Win7 installed on my PC. ANY HELP WILL BE WELCOME.

?2012-11-23T04:43:07Z

Favorite Answer

Boot Win7 .
Right click computer ...Go to Properties .... Go to Advanced ... Go to Startup & Recovery.
Increase Time to display Operating system.

Now reboot.. you should see selection screen.

Anonymous2012-11-23T13:16:22Z

it will only popup if you install win8 in a separate partition.

if you install in over win7 partition, its called upgrade... and it wont show up