Laptop won't boot

I have samsung series 5 laptop with Windows 7 pre-installed. I recently try to install Windows 8 by using USB and the process completed successfully. I deleted the SYSTEM-labeled partition and the partition where Windows 7 located. After the process completed, it restarts. But right after the restart, I have changed the BIOS Boot Order, I put the harddisk to the top, but the laptop won't boot from it, instead, it directly restart it self
I still can access the BIOS, but I really don't what to do. Please help

 

If you deleted the system partition then the only way to get back in business is to do another fresh windows 8 install.

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

Check if eufi and secure boot is enabled. Move 'Windows boot manager' to the top of your boot options. If you deleted 'EFI system' labelled partition, which was about 100mb in size, you will need to do a fresh Windows 8 install.

 

by fresh windows 8 it means i have to format all partitions ?

 

I don't recommend you delete (or format) all partitions. You want to leave the Samsung Recovery partition, the last one on the disk (the last TWO on Win8 models). Your version of Samsung Recovery is notoriously difficult to backup and get back once it's lost.

Also, in your case I do not recommend you enable UEFI in your BIOS settings. These Samsung models have only a simple UEFI implementation (different from the newer Win8 models) and you could run into issues. And switching to UEFI mode will require wiping your entire disk, including Samsung Recovery. Win8 should run perfectly in legacy BIOS mode (non-UEFI) on your model.

Just to clarify, there are two kinds of System partitions: (A) The FAT32 formatted EFI Boot partition, which is usually 350MB, and only created when you install in UEFI mode. (B) The NTFS formatted Microsoft Reserved System partition (so-called MSR) which is 100MB for Win7 and 128MB for Win8.

Your boot problem was most likely caused by the fact that your model has ExpressCache: A small SSD on the motherboard (so-called iSSD) which serves to speed up access to the HDD. When installing Windows from a USB flash drive on these models, Setup gets confused and puts its Boot partition on that iSSD -- which cannot be booted at all.

There are three solutions:

1) Leave the original MSR partition alone and just format the Windows partition (don't delete it). If you already deleted either one (which it sounds like), this will be too late.

2) Install from DVD if at all possible, which makes Windows Setup correctly see your HDD as the boot device. It is BY FAR the easiest on models with ExpressCache.

3) If you MUST install from USB, follow the work workaround in this guide from member hanime (or my guide quoted in the second post of that thread).

I recommend you leave your HDD as the Boot device (under Boot Priority in BIOS) and simply press F10 to temporarily select another boot device when you begin installation (Esc instead of F10 on older models).

 

Thank you so much Dannemand, your guide works like a charm !!!!
You saved my life !