Dear member of SanDisk Community, welcome.
1- Friend, please test the Cruzer in other PCs, to discard problems of your PC.
2- If your Cruzer is showing that the file system is Raw, this means the partition is corrupt or missing.
For formatting the Cruzer (UFD), you will first need to create a new partition or logical drive on the UFD.
Note : All data will be lost.
2.1- In Start / My PC / Control Panel / Administrative Tools / Computer Management / Disk Management:
2.2- Right-click unallocated or Raw space on the UFD where you want to create the partition.
And then click New Partition (Win XP) or New Simple Volume (Vista, W7 and W8).
2.3- In the New Partition Wizard, click Next.
2.4- For the partition or volume size use the default settings, which will create a single partition on the UFD. Click Next.
2.5- Assign, a drive letter for the UFD. Select a drive letter that is not being used by another unit.
2.6- Choose, the file system Fat32 (Cruzer 32 GB) or system exFat (Cruzer more 32 GB). Click Next.
2.7- Click Finish, to complete partitioning and formatting the UFD.
3- If the above steps have not solved the problem, do not grieve more, contact _ SanDisk Technical Support _ who will replace the device, if it’s authentic and is within warranty. Link: http://www.sandisk.com/about-sandisk/contact-us/
Luck, and then you tell us, what happened, please.
Regards, Alfred. (Google translated)