gan numpang nanya nih, laptop ane waktu itu pernah crash, terus katanya kalo mau dibetulin harus di re-install, tapi sebelum di re-install system type nya itu 64bit dan dual core. tapi setelah di reinstall, system type nya berubah jadi 32bit..jadi gimana nih gan caranya ganti 32bit ke 64bit tanpa di re-install?
nih info laptop ane...

Manufacturer ASUSTeK Computer Inc.
Model K43U
Total amount of system memory 2.00 GB RAM
System type 32-bit operating system
Number of processor cores 2
64-bit capable Yes

Storage
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Total size of hard disk(s) 298 GB
Disk partition (C 83 GB Free (103 GB Total)
Disk partition (D 104 GB Free (196 GB Total)
Media drive (E CD/DVD
Media drive (H CD/DVD

Graphics
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Display adapter type AMD Radeon HD 6320 Graphics
Total available graphics memory 949 MB
Dedicated graphics memory 384 MB
Dedicated system memory 0 MB
Shared system memory 565 MB
Display adapter driver version 8.942.7.1000
Primary monitor resolution 1366x768
DirectX version DirectX 10

Network
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Network Adapter Realtek PCIe GBE Family Controller
Network Adapter Qualcomm Atheros AR9285 Wireless Network Adapter

Notes
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The gaming graphics score is based on the primary graphics adapter. If this system has linked or multiple graphics adapters, some software applications may see additional performance benefits.
Caution: Based on the results of the WinSAT Disk assessment, your system drive may have slower response times under some workloads. Performance results will depend on the specific applications used and the amount of memory available. If your experience is satisfactory, no action is needed.